I often have to remote onto live servers. When I'm done, I go to the Start menu to log off, but the Shut Down button is always lying in wait for me and trying to get me to shut down a live server. Is there any way that it can be removed from my Start menu e.g. registry switch? If it could be removed on a per-user basis, that would be even better.

As it 1) brings up a dialog with options to log off, restart, shut down or disconnect and 2) if you select shutdown it will warn you and require another confirm - doing it by accident doesn't seem too likely...

...if the user is not an administrator, only the log off and disconnect options will be enabled.

Update: dkbits answer would be the best way to go if you really want to remove the button ^^